Answers

Subtract 90/20 from 16/35

1^st number: 16/35, 2^nd number: 4 10/20

16/35 - 90/20 is -283/70.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 35 and 20 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 35 × 4 = 140,
   16/35 = 16 × 4/35 × 4 = 64/140
3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
   90/20 = 90 × 7/20 × 7 = 630/140
4. Subtract the two like fractions:
   64/140 - 630/140 = 64 - 630/140 = -566/140
5. After reducing the fraction, the answer is -283/70

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